Flora of North America species comparison

1–6, ascending or erect, simple or branched proximally and distally, glaucous or glabrous.

1(–9), erect, branched from bases and distally, relatively sparsely leafy, glabrous.

proximal linear to obovate, sometimes pinnately lobed, not fleshy, ultimate margins entire or dentate, faces glabrous;

distal reduced (ovate to lanceolate, rarely pinnately lobed, bases clasping).

proximal narrowly oblanceolate to obovate, usually pinnately lobed (lobes oblong to triangular), not fleshy, ultimate margins ± dentate, faces glabrous;

distal greatly reduced (margins entire or basally dentate, apices acute).

hemispheric, 10–22+ × 6–22+ mm.

± campanulate, 6–9 × 4–6.6 mm.

densely bristly.

not bristly.

85–257;

corollas usually pale yellow, sometimes white, 8–12 mm;

outer ligules exserted 2–5 mm.

30–61;

corollas white or pale yellow, 6–10+ mm;

outer ligules exserted 1–4 mm.

(25–)40–60+ in 4–6+ series, (midstripes usually reddish or purple) orbiculate to ovate, oblong, lance-oblong, or linear, unequal, hyaline margins 1–2.5 mm wide, faces glabrous.

12–15+ in 2(–3) series, lance-oblong to lance-linear, hyaline margins 0.05–0.2 mm wide, faces glabrous.

0.

of 5–8+, subulate to lanceolate bractlets, hyaline margins 0.05–0.2 mm.

± prismatic, 1.6–3.2 mm, ribs extending beyond apices, 5 more prominent than others;

persistent pappi of 20–25+, blunt teeth plus 2–6 bristles.

± cylindro-fusiform, 1.7–2 mm, ribs ending 0.2–0.3 mm short of apices, ± equal (distal 0.2–0.3 mm of cypselae slightly expanded, smooth);

pappi persistent, of 16–18 needlelike teeth plus 2 bristles.

70–100% 3-porate.

70–100% 3-porate.

= 14.

= 14.